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Monday, August 21, 2017


RCI to Design, Develop and Test Large-Scale Hybrid Rocket Engine

Rocket Crafters, Inc. (RCI) announced today it has been awarded a $542,600 research contract by the Defense Advanced Research Projects Agency (DARPA). Under the terms of the agreement, RCI is tasked to build and test a large-scale hybrid rocket engine using RCI’s patented Direct-Digital Advanced Rocket Technology (D-DART™). During the eight-month period of performance, RCI aims to design, build, and test a 5,000 lbf peak thrust, throttle-capable hybrid rocket engine based on the company’s potentially industry-disruptive rocket engine technology.

In theory, hybrid rockets have several advantages over the more commonly used solid and liquid chemical rockets. They can be throttled and restarted, unlike a solid rocket, and are less costly and faster to develop compared to liquid rocket engines due to their mechanical simplicity. They are also safer to handle than either solid or liquid rockets. For these reasons, Government and industry researchers have long sought to develop a large-scale hybrid rocket engine but have had significant difficulties with unpredictable thrust and excessive vibration.


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RCI’s D-DARTTM rocket engine solves those long-standing problems. Using advanced giant-scale additive manufacturing (also known as industrial 3D printing) equipment, RCI prints near-perfect fuel grains from proprietary high-energy polymer/additive formulas. These grains are designed to dually serve as the engine’s fuel source and combustion chamber.

In this DARPA research effort, RCI intends to build on its previous research with lab-scale prototype engines. Their initial test series achieved a 97.5-percent thrust profile consistency and showed no signs of combustion instability or vibration—a level of performance never before demonstrated in a hybrid rocket engine. With assistance from researchers at the Florida Institute of Technology, Rocket Crafters’ scientists and engineers are currently conducting an extensive study to determine the optimum solid fuel formulation and oxidizer/fuel mixture to be used in the company’s future hybrid-rocket-powered products.

Under the DARPA agreement, RCI aims to design, build, and throttle-test a flight-capable rocket motor using a custom static test oxidizer system mounted on a new hybrid rocket test stand to be constructed at Florida’s Space Coast. These tests seek to verify the hybrid rocket engine’s reliability and consistency while, at the same time, demonstrating throttling and emergency engine shutdown capabilities.

Source : Rocket Crafters, Inc. - view original press release

Published on ASDNews: Jul 25, 2017

 

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